FFmpeg
vf_uspp.c
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1 /*
2  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
3  * Copyright (c) 2014 Arwa Arif <arwaarif1994@gmail.com>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20  */
21 
22 /**
23  * @file
24  * Ultra Slow/Simple Post-processing filter.
25  *
26  * Originally written by Michael Niedermayer for the MPlayer project, and
27  * ported by Arwa Arif for FFmpeg.
28  */
29 
30 #include "libavutil/avassert.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/mem_internal.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/video_enc_params.h"
36 #include "libavcodec/avcodec.h"
37 #include "internal.h"
38 #include "qp_table.h"
39 #include "avfilter.h"
40 
41 #define MAX_LEVEL 8 /* quality levels */
42 #define BLOCK 16
43 
44 typedef struct USPPContext {
45  const AVClass *av_class;
46  int log2_count;
47  int hsub, vsub;
48  int qp;
49  enum AVVideoEncParamsType qscale_type;
50  int temp_stride[3];
51  uint8_t *src[3];
52  uint16_t *temp[3];
53  int outbuf_size;
54  uint8_t *outbuf;
55  AVCodecContext *avctx_enc[BLOCK*BLOCK];
56  AVPacket *pkt;
57  AVFrame *frame;
58  AVFrame *frame_dec;
59  int8_t *non_b_qp_table;
60  int non_b_qp_stride;
61  int use_bframe_qp;
62 } USPPContext;
63 
64 #define OFFSET(x) offsetof(USPPContext, x)
65 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
66 static const AVOption uspp_options[] = {
67  { "quality", "set quality", OFFSET(log2_count), AV_OPT_TYPE_INT, {.i64 = 3}, 0, MAX_LEVEL, FLAGS },
68  { "qp", "force a constant quantizer parameter", OFFSET(qp), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, FLAGS },
69  { "use_bframe_qp", "use B-frames' QP", OFFSET(use_bframe_qp), AV_OPT_TYPE_BOOL,{.i64 = 0}, 0, 1, FLAGS },
70  { NULL }
71 };
72 
73 AVFILTER_DEFINE_CLASS(uspp);
74 
75 DECLARE_ALIGNED(8, static const uint8_t, dither)[8][8] = {
76  { 0*4, 48*4, 12*4, 60*4, 3*4, 51*4, 15*4, 63*4, },
77  { 32*4, 16*4, 44*4, 28*4, 35*4, 19*4, 47*4, 31*4, },
78  { 8*4, 56*4, 4*4, 52*4, 11*4, 59*4, 7*4, 55*4, },
79  { 40*4, 24*4, 36*4, 20*4, 43*4, 27*4, 39*4, 23*4, },
80  { 2*4, 50*4, 14*4, 62*4, 1*4, 49*4, 13*4, 61*4, },
81  { 34*4, 18*4, 46*4, 30*4, 33*4, 17*4, 45*4, 29*4, },
82  { 10*4, 58*4, 6*4, 54*4, 9*4, 57*4, 5*4, 53*4, },
83  { 42*4, 26*4, 38*4, 22*4, 41*4, 25*4, 37*4, 21*4, },
84 };
85 
86 static const uint8_t offset[511][2] = {
87  { 0, 0},
88  { 0, 0}, { 8, 8}, // quality 1
89  { 0, 0}, { 4, 4}, {12, 8}, { 8,12}, // quality 2
90  { 0, 0}, {10, 2}, { 4, 4}, {14, 6}, { 8, 8}, { 2,10}, {12,12}, { 6,14}, // quality 3
91 
92  { 0, 0}, {10, 2}, { 4, 4}, {14, 6}, { 8, 8}, { 2,10}, {12,12}, { 6,14},
93  { 5, 1}, {15, 3}, { 9, 5}, { 3, 7}, {13, 9}, { 7,11}, { 1,13}, {11,15}, // quality 4
94 
95  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
96  { 2, 2}, {10, 2}, { 2,10}, {10,10}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
97  { 4, 4}, {12, 4}, { 4,12}, {12,12}, { 1, 5}, { 9, 5}, { 1,13}, { 9,13},
98  { 6, 6}, {14, 6}, { 6,14}, {14,14}, { 3, 7}, {11, 7}, { 3,15}, {11,15}, // quality 5
99 
100  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 4, 0}, {12, 0}, { 4, 8}, {12, 8},
101  { 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
102  { 3, 2}, {11, 2}, { 3,10}, {11,10}, { 7, 2}, {15, 2}, { 7,10}, {15,10},
103  { 2, 3}, {10, 3}, { 2,11}, {10,11}, { 6, 3}, {14, 3}, { 6,11}, {14,11},
104  { 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 4, 4}, {12, 4}, { 4,12}, {12,12},
105  { 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 5, 5}, {13, 5}, { 5,13}, {13,13},
106  { 3, 6}, {11, 6}, { 3,14}, {11,14}, { 7, 6}, {15, 6}, { 7,14}, {15,14},
107  { 2, 7}, {10, 7}, { 2,15}, {10,15}, { 6, 7}, {14, 7}, { 6,15}, {14,15}, // quality 6
108 
109  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 0, 2}, { 8, 2}, { 0,10}, { 8,10},
110  { 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 0, 6}, { 8, 6}, { 0,14}, { 8,14},
111  { 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 1, 3}, { 9, 3}, { 1,11}, { 9,11},
112  { 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 1, 7}, { 9, 7}, { 1,15}, { 9,15},
113  { 2, 0}, {10, 0}, { 2, 8}, {10, 8}, { 2, 2}, {10, 2}, { 2,10}, {10,10},
114  { 2, 4}, {10, 4}, { 2,12}, {10,12}, { 2, 6}, {10, 6}, { 2,14}, {10,14},
115  { 3, 1}, {11, 1}, { 3, 9}, {11, 9}, { 3, 3}, {11, 3}, { 3,11}, {11,11},
116  { 3, 5}, {11, 5}, { 3,13}, {11,13}, { 3, 7}, {11, 7}, { 3,15}, {11,15},
117  { 4, 0}, {12, 0}, { 4, 8}, {12, 8}, { 4, 2}, {12, 2}, { 4,10}, {12,10},
118  { 4, 4}, {12, 4}, { 4,12}, {12,12}, { 4, 6}, {12, 6}, { 4,14}, {12,14},
119  { 5, 1}, {13, 1}, { 5, 9}, {13, 9}, { 5, 3}, {13, 3}, { 5,11}, {13,11},
120  { 5, 5}, {13, 5}, { 5,13}, {13,13}, { 5, 7}, {13, 7}, { 5,15}, {13,15},
121  { 6, 0}, {14, 0}, { 6, 8}, {14, 8}, { 6, 2}, {14, 2}, { 6,10}, {14,10},
122  { 6, 4}, {14, 4}, { 6,12}, {14,12}, { 6, 6}, {14, 6}, { 6,14}, {14,14},
123  { 7, 1}, {15, 1}, { 7, 9}, {15, 9}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
124  { 7, 5}, {15, 5}, { 7,13}, {15,13}, { 7, 7}, {15, 7}, { 7,15}, {15,15}, // quality 7
125 
126  { 0, 0}, { 8, 0}, { 0, 8}, { 8, 8}, { 4, 4}, {12, 4}, { 4,12}, {12,12},
127  { 0, 4}, { 8, 4}, { 0,12}, { 8,12}, { 4, 0}, {12, 0}, { 4, 8}, {12, 8},
128  { 2, 2}, {10, 2}, { 2,10}, {10,10}, { 6, 6}, {14, 6}, { 6,14}, {14,14},
129  { 2, 6}, {10, 6}, { 2,14}, {10,14}, { 6, 2}, {14, 2}, { 6,10}, {14,10},
130  { 0, 2}, { 8, 2}, { 0,10}, { 8,10}, { 4, 6}, {12, 6}, { 4,14}, {12,14},
131  { 0, 6}, { 8, 6}, { 0,14}, { 8,14}, { 4, 2}, {12, 2}, { 4,10}, {12,10},
132  { 2, 0}, {10, 0}, { 2, 8}, {10, 8}, { 6, 4}, {14, 4}, { 6,12}, {14,12},
133  { 2, 4}, {10, 4}, { 2,12}, {10,12}, { 6, 0}, {14, 0}, { 6, 8}, {14, 8},
134  { 1, 1}, { 9, 1}, { 1, 9}, { 9, 9}, { 5, 5}, {13, 5}, { 5,13}, {13,13},
135  { 1, 5}, { 9, 5}, { 1,13}, { 9,13}, { 5, 1}, {13, 1}, { 5, 9}, {13, 9},
136  { 3, 3}, {11, 3}, { 3,11}, {11,11}, { 7, 7}, {15, 7}, { 7,15}, {15,15},
137  { 3, 7}, {11, 7}, { 3,15}, {11,15}, { 7, 3}, {15, 3}, { 7,11}, {15,11},
138  { 1, 3}, { 9, 3}, { 1,11}, { 9,11}, { 5, 7}, {13, 7}, { 5,15}, {13,15},
139  { 1, 7}, { 9, 7}, { 1,15}, { 9,15}, { 5, 3}, {13, 3}, { 5,11}, {13,11}, // quality 8
140  { 3, 1}, {11, 1}, { 3, 9}, {11, 9}, { 7, 5}, {15, 5}, { 7,13}, {15,13},
141  { 3, 5}, {11, 5}, { 3,13}, {11,13}, { 7, 1}, {15, 1}, { 7, 9}, {15, 9},
142  { 0, 1}, { 8, 1}, { 0, 9}, { 8, 9}, { 4, 5}, {12, 5}, { 4,13}, {12,13},
143  { 0, 5}, { 8, 5}, { 0,13}, { 8,13}, { 4, 1}, {12, 1}, { 4, 9}, {12, 9},
144  { 2, 3}, {10, 3}, { 2,11}, {10,11}, { 6, 7}, {14, 7}, { 6,15}, {14,15},
145  { 2, 7}, {10, 7}, { 2,15}, {10,15}, { 6, 3}, {14, 3}, { 6,11}, {14,11},
146  { 0, 3}, { 8, 3}, { 0,11}, { 8,11}, { 4, 7}, {12, 7}, { 4,15}, {12,15},
147  { 0, 7}, { 8, 7}, { 0,15}, { 8,15}, { 4, 3}, {12, 3}, { 4,11}, {12,11},
148  { 2, 1}, {10, 1}, { 2, 9}, {10, 9}, { 6, 5}, {14, 5}, { 6,13}, {14,13},
149  { 2, 5}, {10, 5}, { 2,13}, {10,13}, { 6, 1}, {14, 1}, { 6, 9}, {14, 9},
150  { 1, 0}, { 9, 0}, { 1, 8}, { 9, 8}, { 5, 4}, {13, 4}, { 5,12}, {13,12},
151  { 1, 4}, { 9, 4}, { 1,12}, { 9,12}, { 5, 0}, {13, 0}, { 5, 8}, {13, 8},
152  { 3, 2}, {11, 2}, { 3,10}, {11,10}, { 7, 6}, {15, 6}, { 7,14}, {15,14},
153  { 3, 6}, {11, 6}, { 3,14}, {11,14}, { 7, 2}, {15, 2}, { 7,10}, {15,10},
154  { 1, 2}, { 9, 2}, { 1,10}, { 9,10}, { 5, 6}, {13, 6}, { 5,14}, {13,14},
155  { 1, 6}, { 9, 6}, { 1,14}, { 9,14}, { 5, 2}, {13, 2}, { 5,10}, {13,10},
156  { 3, 0}, {11, 0}, { 3, 8}, {11, 8}, { 7, 4}, {15, 4}, { 7,12}, {15,12},
157  { 3, 4}, {11, 4}, { 3,12}, {11,12}, { 7, 0}, {15, 0}, { 7, 8}, {15, 8},
158 };
159 
160 static void store_slice_c(uint8_t *dst, const uint16_t *src,
161  int dst_stride, int src_stride,
162  int width, int height, int log2_scale)
163 {
164  int y, x;
165 
166 #define STORE(pos) do { \
167  temp = ((src[x + y * src_stride + pos] << log2_scale) + d[pos]) >> 8; \
168  if (temp & 0x100) temp = ~(temp >> 31); \
169  dst[x + y * dst_stride + pos] = temp; \
170 } while (0)
171 
172  for (y = 0; y < height; y++) {
173  const uint8_t *d = dither[y&7];
174  for (x = 0; x < width; x += 8) {
175  int temp;
176  STORE(0);
177  STORE(1);
178  STORE(2);
179  STORE(3);
180  STORE(4);
181  STORE(5);
182  STORE(6);
183  STORE(7);
184  }
185  }
186 }
187 
188 static void filter(USPPContext *p, uint8_t *dst[3], uint8_t *src[3],
189  int dst_stride[3], int src_stride[3], int width,
190  int height, uint8_t *qp_store, int qp_stride)
191 {
192  int x, y, i, j;
193  const int count = 1<<p->log2_count;
194  int ret;
195 
196  for (i = 0; i < 3; i++) {
197  int is_chroma = !!i;
198  int w = AV_CEIL_RSHIFT(width, is_chroma ? p->hsub : 0);
199  int h = AV_CEIL_RSHIFT(height, is_chroma ? p->vsub : 0);
200  int stride = p->temp_stride[i];
201  int block = BLOCK >> (is_chroma ? p->hsub : 0);
202 
203  if (!src[i] || !dst[i])
204  continue;
205  for (y = 0; y < h; y++) {
206  int index = block + block * stride + y * stride;
207 
208  memcpy(p->src[i] + index, src[i] + y * src_stride[i], w );
209  for (x = 0; x < block; x++) {
210  p->src[i][index - x - 1] = p->src[i][index + x ];
211  p->src[i][index + w + x ] = p->src[i][index + w - x - 1];
212  }
213  }
214  for (y = 0; y < block; y++) {
215  memcpy(p->src[i] + ( block-1-y) * stride, p->src[i] + ( y+block ) * stride, stride);
216  memcpy(p->src[i] + (h+block +y) * stride, p->src[i] + (h-y+block-1) * stride, stride);
217  }
218 
219  p->frame->linesize[i] = stride;
220  memset(p->temp[i], 0, (h + 2 * block) * stride * sizeof(int16_t));
221  }
222 
223  if (p->qp)
224  p->frame->quality = p->qp * FF_QP2LAMBDA;
225  else {
226  int qpsum=0;
227  int qpcount = (height>>4) * (height>>4);
228 
229  for (y = 0; y < (height>>4); y++) {
230  for (x = 0; x < (width>>4); x++)
231  qpsum += qp_store[x + y * qp_stride];
232  }
233  p->frame->quality = ff_norm_qscale((qpsum + qpcount/2) / qpcount, p->qscale_type) * FF_QP2LAMBDA;
234  }
235 // init per MB qscale stuff FIXME
236  p->frame->height = height + BLOCK;
237  p->frame->width = width + BLOCK;
238 
239  for (i = 0; i < count; i++) {
240  const int x1 = offset[i+count-1][0];
241  const int y1 = offset[i+count-1][1];
242  const int x1c = x1 >> p->hsub;
243  const int y1c = y1 >> p->vsub;
244  const int BLOCKc = BLOCK >> p->hsub;
245  int offset;
246  AVPacket *pkt = p->pkt;
247  int got_pkt_ptr;
248 
249  av_packet_unref(pkt);
250  pkt->data = p->outbuf;
251  pkt->size = p->outbuf_size;
252 
253  p->frame->data[0] = p->src[0] + x1 + y1 * p->frame->linesize[0];
254  p->frame->data[1] = p->src[1] + x1c + y1c * p->frame->linesize[1];
255  p->frame->data[2] = p->src[2] + x1c + y1c * p->frame->linesize[2];
256  p->frame->format = p->avctx_enc[i]->pix_fmt;
257 
258  ret = avcodec_encode_video2(p->avctx_enc[i], pkt, p->frame, &got_pkt_ptr);
259  if (ret < 0) {
260  av_log(p->avctx_enc[i], AV_LOG_ERROR, "Encoding failed\n");
261  continue;
262  }
263  av_packet_unref(pkt);
264 
265  p->frame_dec = p->avctx_enc[i]->coded_frame;
266 
267  offset = (BLOCK-x1) + (BLOCK-y1) * p->frame_dec->linesize[0];
268 
269  for (y = 0; y < height; y++)
270  for (x = 0; x < width; x++)
271  p->temp[0][x + y * p->temp_stride[0]] += p->frame_dec->data[0][x + y * p->frame_dec->linesize[0] + offset];
272 
273  if (!src[2] || !dst[2])
274  continue;
275 
276  offset = (BLOCKc-x1c) + (BLOCKc-y1c) * p->frame_dec->linesize[1];
277 
278  for (y = 0; y < AV_CEIL_RSHIFT(height, p->vsub); y++) {
279  for (x = 0; x < AV_CEIL_RSHIFT(width, p->hsub); x++) {
280  p->temp[1][x + y * p->temp_stride[1]] += p->frame_dec->data[1][x + y * p->frame_dec->linesize[1] + offset];
281  p->temp[2][x + y * p->temp_stride[2]] += p->frame_dec->data[2][x + y * p->frame_dec->linesize[2] + offset];
282  }
283  }
284  }
285 
286  for (j = 0; j < 3; j++) {
287  int is_chroma = !!j;
288  if (!dst[j])
289  continue;
290  store_slice_c(dst[j], p->temp[j], dst_stride[j], p->temp_stride[j],
291  AV_CEIL_RSHIFT(width, is_chroma ? p->hsub : 0),
292  AV_CEIL_RSHIFT(height, is_chroma ? p->vsub : 0),
293  8-p->log2_count);
294  }
295 }
296 
297 static const enum AVPixelFormat pix_fmts[] = {
298  AV_PIX_FMT_YUV444P,
299  AV_PIX_FMT_YUV420P,
300  AV_PIX_FMT_YUV410P,
301  AV_PIX_FMT_YUVJ444P,
302  AV_PIX_FMT_YUVJ420P,
303  AV_PIX_FMT_GRAY8,
304  AV_PIX_FMT_NONE
305 };
306 
307 static int config_input(AVFilterLink *inlink)
308 {
309 
310  AVFilterContext *ctx = inlink->dst;
311  USPPContext *uspp = ctx->priv;
312  const int height = inlink->h;
313  const int width = inlink->w;
314  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
315  int i;
316 
317  const AVCodec *enc = avcodec_find_encoder(AV_CODEC_ID_SNOW);
318  if (!enc) {
319  av_log(ctx, AV_LOG_ERROR, "SNOW encoder not found.\n");
320  return AVERROR(EINVAL);
321  }
322 
323  uspp->hsub = desc->log2_chroma_w;
324  uspp->vsub = desc->log2_chroma_h;
325 
326  for (i = 0; i < 3; i++) {
327  int is_chroma = !!i;
328  int w = (width + 4 * BLOCK-1) & (~(2 * BLOCK-1));
329  int h = (height + 4 * BLOCK-1) & (~(2 * BLOCK-1));
330 
331  if (is_chroma) {
332  w = AV_CEIL_RSHIFT(w, uspp->hsub);
333  h = AV_CEIL_RSHIFT(h, uspp->vsub);
334  }
335 
336  uspp->temp_stride[i] = w;
337  if (!(uspp->temp[i] = av_malloc_array(uspp->temp_stride[i], h * sizeof(int16_t))))
338  return AVERROR(ENOMEM);
339  if (!(uspp->src [i] = av_malloc_array(uspp->temp_stride[i], h * sizeof(uint8_t))))
340  return AVERROR(ENOMEM);
341  }
342 
343  for (i = 0; i < (1<<uspp->log2_count); i++) {
344  AVCodecContext *avctx_enc;
345  AVDictionary *opts = NULL;
346  int ret;
347 
348  if (!(uspp->avctx_enc[i] = avcodec_alloc_context3(NULL)))
349  return AVERROR(ENOMEM);
350 
351  avctx_enc = uspp->avctx_enc[i];
352  avctx_enc->width = width + BLOCK;
353  avctx_enc->height = height + BLOCK;
354  avctx_enc->time_base = (AVRational){1,25}; // meaningless
355  avctx_enc->gop_size = INT_MAX;
356  avctx_enc->max_b_frames = 0;
357  avctx_enc->pix_fmt = inlink->format;
358  avctx_enc->flags = AV_CODEC_FLAG_QSCALE | AV_CODEC_FLAG_LOW_DELAY;
359  avctx_enc->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
360  avctx_enc->global_quality = 123;
361  av_dict_set(&opts, "no_bitstream", "1", 0);
362  ret = avcodec_open2(avctx_enc, enc, &opts);
363  av_dict_free(&opts);
364  if (ret < 0)
365  return ret;
366  av_assert0(avctx_enc->codec);
367  }
368 
369  uspp->outbuf_size = (width + BLOCK) * (height + BLOCK) * 10;
370  if (!(uspp->frame = av_frame_alloc()))
371  return AVERROR(ENOMEM);
372  if (!(uspp->pkt = av_packet_alloc()))
373  return AVERROR(ENOMEM);
374  if (!(uspp->outbuf = av_malloc(uspp->outbuf_size)))
375  return AVERROR(ENOMEM);
376 
377  return 0;
378 }
379 
380 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
381 {
382  AVFilterContext *ctx = inlink->dst;
383  USPPContext *uspp = ctx->priv;
384  AVFilterLink *outlink = ctx->outputs[0];
385  AVFrame *out = in;
386 
387  int qp_stride = 0;
388  int8_t *qp_table = NULL;
389  int ret = 0;
390 
391  /* if we are not in a constant user quantizer mode and we don't want to use
392  * the quantizers from the B-frames (B-frames often have a higher QP), we
393  * need to save the qp table from the last non B-frame; this is what the
394  * following code block does */
395  if (!uspp->qp && (uspp->use_bframe_qp || in->pict_type != AV_PICTURE_TYPE_B)) {
396  ret = ff_qp_table_extract(in, &qp_table, &qp_stride, NULL, &uspp->qscale_type);
397  if (ret < 0) {
398  av_frame_free(&in);
399  return ret;
400  }
401 
402  if (!uspp->use_bframe_qp && in->pict_type != AV_PICTURE_TYPE_B) {
403  av_freep(&uspp->non_b_qp_table);
404  uspp->non_b_qp_table = qp_table;
405  uspp->non_b_qp_stride = qp_stride;
406  }
407  }
408 
409  if (uspp->log2_count && !ctx->is_disabled) {
410  if (!uspp->use_bframe_qp && uspp->non_b_qp_table) {
411  qp_table = uspp->non_b_qp_table;
412  qp_stride = uspp->non_b_qp_stride;
413  }
414 
415  if (qp_table || uspp->qp) {
416 
417  /* get a new frame if in-place is not possible or if the dimensions
418  * are not multiple of 8 */
419  if (!av_frame_is_writable(in) || (inlink->w & 7) || (inlink->h & 7)) {
420  const int aligned_w = FFALIGN(inlink->w, 8);
421  const int aligned_h = FFALIGN(inlink->h, 8);
422 
423  out = ff_get_video_buffer(outlink, aligned_w, aligned_h);
424  if (!out) {
425  av_frame_free(&in);
426  if (qp_table != uspp->non_b_qp_table)
427  av_free(qp_table);
428  return AVERROR(ENOMEM);
429  }
430  av_frame_copy_props(out, in);
431  out->width = in->width;
432  out->height = in->height;
433  }
434 
435  filter(uspp, out->data, in->data, out->linesize, in->linesize,
436  inlink->w, inlink->h, qp_table, qp_stride);
437  }
438  }
439 
440  if (in != out) {
441  if (in->data[3])
442  av_image_copy_plane(out->data[3], out->linesize[3],
443  in ->data[3], in ->linesize[3],
444  inlink->w, inlink->h);
445  av_frame_free(&in);
446  }
447  ret = ff_filter_frame(outlink, out);
448  if (qp_table != uspp->non_b_qp_table)
449  av_freep(&qp_table);
450  return ret;
451 }
452 
453 static av_cold void uninit(AVFilterContext *ctx)
454 {
455  USPPContext *uspp = ctx->priv;
456  int i;
457 
458  for (i = 0; i < 3; i++) {
459  av_freep(&uspp->temp[i]);
460  av_freep(&uspp->src[i]);
461  }
462 
463  for (i = 0; i < (1 << uspp->log2_count); i++)
464  avcodec_free_context(&uspp->avctx_enc[i]);
465 
466  av_freep(&uspp->non_b_qp_table);
467  av_freep(&uspp->outbuf);
468  av_packet_free(&uspp->pkt);
469  av_frame_free(&uspp->frame);
470 }
471 
472 static const AVFilterPad uspp_inputs[] = {
473  {
474  .name = "default",
475  .type = AVMEDIA_TYPE_VIDEO,
476  .config_props = config_input,
477  .filter_frame = filter_frame,
478  },
479 };
480 
481 static const AVFilterPad uspp_outputs[] = {
482  {
483  .name = "default",
484  .type = AVMEDIA_TYPE_VIDEO,
485  },
486 };
487 
488 const AVFilter ff_vf_uspp = {
489  .name = "uspp",
490  .description = NULL_IF_CONFIG_SMALL("Apply Ultra Simple / Slow Post-processing filter."),
491  .priv_size = sizeof(USPPContext),
492  .uninit = uninit,
493  FILTER_INPUTS(uspp_inputs),
494  FILTER_OUTPUTS(uspp_outputs),
495  FILTER_PIXFMTS_ARRAY(pix_fmts),
496  .priv_class = &uspp_class,
497  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
498 };
STORE
#define STORE(pos)
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:101
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_uspp.c:453
USPPContext::src
uint8_t * src[3]
Definition: vf_uspp.c:51
USPPContext::frame
AVFrame * frame
Definition: vf_uspp.c:57
USPPContext::qp
int qp
Definition: vf_uspp.c:48
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:422
AVCodec
AVCodec.
Definition: codec.h:196
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_uspp.c:380
USPPContext::avctx_enc
AVCodecContext * avctx_enc[BLOCK *BLOCK]
Definition: vf_uspp.c:55
qp_table.h
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
mem_internal.h
out
FILE * out
Definition: movenc.c:54
FF_COMPLIANCE_EXPERIMENTAL
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:1305
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:999
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2662
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:170
AV_CODEC_FLAG_QSCALE
#define AV_CODEC_FLAG_QSCALE
Use fixed qscale.
Definition: avcodec.h:216
USPPContext::temp
uint16_t * temp[3]
Definition: vf_uspp.c:52
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:111
avcodec_find_encoder
const AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: allcodecs.c:930
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
pixdesc.h
AVFrame::width
int width
Definition: frame.h:397
w
uint8_t w
Definition: llviddspenc.c:38
AVPacket::data
uint8_t * data
Definition: packet.h:374
AVOption
AVOption.
Definition: opt.h:251
BLOCK
#define BLOCK
Definition: vf_uspp.c:42
offset
static const uint8_t offset[511][2]
Definition: vf_uspp.c:86
AVDictionary
Definition: dict.c:30
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_uspp.c:307
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:175
ff_norm_qscale
static int ff_norm_qscale(int qscale, enum AVVideoEncParamsType type)
Normalize the qscale factor FIXME Add support for other values of enum AVVideoEncParamsType besides A...
Definition: qp_table.h:39
USPPContext::vsub
int vsub
Definition: vf_uspp.c:47
av_packet_free
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: avpacket.c:73
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:346
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:30
av_image_copy_plane
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:374
USPPContext::use_bframe_qp
int use_bframe_qp
Definition: vf_uspp.c:61
AVCodecContext::codec
const struct AVCodec * codec
Definition: avcodec.h:398
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:469
AV_CODEC_FLAG_LOW_DELAY
#define AV_CODEC_FLAG_LOW_DELAY
Force low delay.
Definition: avcodec.h:270
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:49
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:99
avassert.h
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
store_slice_c
static void store_slice_c(uint8_t *dst, const uint16_t *src, int dst_stride, int src_stride, int width, int height, int log2_scale)
Definition: vf_uspp.c:160
AVVideoEncParamsType
AVVideoEncParamsType
Definition: video_enc_params.h:28
uspp_outputs
static const AVFilterPad uspp_outputs[]
Definition: vf_uspp.c:481
avcodec_alloc_context3
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
Definition: options.c:149
width
#define width
AVCodecContext::global_quality
int global_quality
Global quality for codecs which cannot change it per frame.
Definition: avcodec.h:455
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:50
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
ctx
AVFormatContext * ctx
Definition: movenc.c:48
USPPContext::non_b_qp_stride
int non_b_qp_stride
Definition: vf_uspp.c:60
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:190
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
if
if(ret)
Definition: filter_design.txt:179
opts
AVDictionary * opts
Definition: movenc.c:50
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:596
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(uspp)
avcodec_free_context
void avcodec_free_context(AVCodecContext **avctx)
Free the codec context and everything associated with it and write NULL to the provided pointer.
Definition: options.c:164
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
USPPContext::log2_count
int log2_count
Definition: vf_uspp.c:46
USPPContext::pkt
AVPacket * pkt
Definition: vf_uspp.c:56
avcodec_open2
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
Definition: avcodec.c:115
dither
static const uint8_t dither[8][8]
Definition: vf_uspp.c:75
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
index
int index
Definition: gxfenc.c:89
AVCodecContext::time_base
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avcodec.h:512
USPPContext::outbuf
uint8_t * outbuf
Definition: vf_uspp.c:54
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:422
AVPacket::size
int size
Definition: packet.h:375
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AVCodecContext::gop_size
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:584
USPPContext::av_class
const AVClass * av_class
Definition: vf_uspp.c:45
AVFrame::quality
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:461
av_frame_is_writable
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:523
AVFrame::format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
Definition: frame.h:412
height
#define height
av_packet_alloc
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
Definition: avpacket.c:62
av_dict_free
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
Definition: dict.c:203
internal.h
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:116
USPPContext::frame_dec
AVFrame * frame_dec
Definition: vf_uspp.c:58
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
MAX_LEVEL
#define MAX_LEVEL
Definition: vf_uspp.c:41
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:31
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:55
AVCodecContext::height
int height
Definition: avcodec.h:562
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:599
avcodec.h
USPPContext
Definition: vf_uspp.c:44
stride
#define stride
Definition: h264pred_template.c:537
AVFilter
Filter definition.
Definition: avfilter.h:171
ret
ret
Definition: filter_design.txt:187
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_uspp.c:297
ff_qp_table_extract
int ff_qp_table_extract(AVFrame *frame, int8_t **table, int *table_w, int *table_h, enum AVVideoEncParamsType *qscale_type)
Extract a libpostproc-compatible QP table - an 8-bit QP value per 16x16 macroblock,...
Definition: qp_table.c:27
AVCodecContext::strict_std_compliance
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:1300
uspp_options
static const AVOption uspp_options[]
Definition: vf_uspp.c:66
AVCodecContext
main external API structure.
Definition: avcodec.h:389
AVFrame::height
int height
Definition: frame.h:397
AV_CODEC_ID_SNOW
@ AV_CODEC_ID_SNOW
Definition: codec_id.h:262
uspp_inputs
static const AVFilterPad uspp_inputs[]
Definition: vf_uspp.c:472
AV_PICTURE_TYPE_B
@ AV_PICTURE_TYPE_B
Bi-dir predicted.
Definition: avutil.h:276
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
avfilter.h
temp
else temp
Definition: vf_mcdeint.c:248
filter
static void filter(USPPContext *p, uint8_t *dst[3], uint8_t *src[3], int dst_stride[3], int src_stride[3], int width, int height, uint8_t *qp_store, int qp_stride)
Definition: vf_uspp.c:188
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVFilterContext
An instance of a filter.
Definition: avfilter.h:408
USPPContext::non_b_qp_table
int8_t * non_b_qp_table
Definition: vf_uspp.c:59
desc
const char * desc
Definition: libsvtav1.c:83
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVCodecContext::max_b_frames
int max_b_frames
maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 re...
Definition: avcodec.h:661
FLAGS
#define FLAGS
Definition: vf_uspp.c:65
USPPContext::qscale_type
enum AVVideoEncParamsType qscale_type
Definition: vf_uspp.c:49
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
av_free
#define av_free(p)
Definition: tableprint_vlc.h:33
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
AVPacket
This structure stores compressed data.
Definition: packet.h:351
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:244
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:191
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
d
d
Definition: ffmpeg_filter.c:153
USPPContext::outbuf_size
int outbuf_size
Definition: vf_uspp.c:53
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:562
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:160
imgutils.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:370
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
block
The exact code depends on how similar the blocks are and how related they are to the block
Definition: filter_design.txt:207
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
h
h
Definition: vp9dsp_template.c:2038
OFFSET
#define OFFSET(x)
Definition: vf_uspp.c:64
FF_QP2LAMBDA
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
Definition: avutil.h:227
ff_vf_uspp
const AVFilter ff_vf_uspp
Definition: vf_uspp.c:488
video_enc_params.h
USPPContext::hsub
int hsub
Definition: vf_uspp.c:47
USPPContext::temp_stride
int temp_stride[3]
Definition: vf_uspp.c:50
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